— How often does your sister surf the internet?
A. three time
B. three times
C. three time every day
D. three times a day
—How often do you go hiking?
A. Twice a week
C. Three times
1. She sees a film ________ (one) a month.
2. Tom was ________ (illness) yesterday, so he didn't go to school.
3. Doing exercise can help us stay ________ (health).
4. Li Hua had a ________ (quickly) breakfast and then went to work.
5. Don't ________ (worried) about your English. I can help you.
Mr. Brown _______ exercises, so he is very fat.